I install on my computer for test only ... and I find in file :
/include/theme/default/isearch.inc line 95 from 244
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$r = q("SELECT id,subject,thread_id,length,foff,file_id FROM fud23_msg ORDER BY thread_id,id ASC");
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now my forum are instaled on webhosting server and I see other directory structure ... it's a new directory 777 ... now it's complicated to write in this file isearch.inc...
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bash-2.05a$ ls -al isearch.inc
-rw-r--r-- 1 nobody nobody 7373 Sep 27 07:55 isearch.inc

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I not have write permision ... this directory are owned by webserver
I will try to find a way ...
Thank You !

I have a question to that changing of ASC -> DESC
Im not sure wether to ask it hear but ...

I recently upgraded to 2.7.5 in hope that it will be solved, but it is still the same in 2.7.4 and 2.7.5 - whats my fault?

I change ASC to DESC in msg.php in my default theme and in src msg.php.t - after that order is like I want.
But when a new msg is posted in a forum it is marked as unread an when I read it after that the forum is marked as read again.
But inside the Forum when a new msg is posted inside a topic the topic is marked as unread and keeps marked as unread!
That is confusing for me ans others what is my fault?

Basically the marking of read logic takes the id of the last message in the list (presuming it to be the latest message) and uses that for mark read. Since you've reversed the order you need to adjust the code to take the 1st message in the list.

hm, I do not really understand php files, I just changed ASC to DESC. So now I dont see myself adjusting the code.
Can you or someone else help me with that?
Or can you point me to some help?
Because my server is very slow it is a big improvement that new messages are shown first - no more scrolling that much ...
So it would be very nice to help me

Basically the marking of read logic takes the id of the last message in the list (presuming it to be the latest message) and uses that for mark read. Since you've reversed the order you need to adjust the code to take the 1st message in the list.

I dont find answers to that in this forum - if that is because I am to stupid to search can someone point me to that answer?
I think all they talk about is changing ASC to DESC nothing more to be done?!